Table 4.
Cutoff of the thyroglobulin for detection of disease, at multiple time points.
| Nodal Disease vs. Non-Evidence Disease | Distal Disease vs. Non-Evidence Disease | |||
|---|---|---|---|---|
| Cutoff (Se and Sp) |
AUC (95% CI) |
Cutoff (Se and Sp) |
AUC (95% CI) |
|
| Tg−30 (ng/mL) | 1.30 (100 and 89.0) |
99.0 (96.9 to 100) |
16.00 (100.0 and 100.0) |
100 (100 to 100) |
| Tg0 (ng/mL) | 5.70 (85.7 and 76.8) |
85.0 (75.8 to 94.6) |
32.98 (100 and 96.0) |
99.2 (97.4 to 100) |
| Tg+7 (ng/mL) | 78.23 (76.9 and 79.0) |
76.9 (63.2 to 90.6) |
100.07 (100 and 87.7) |
93.4 (85.3 to 100) |
Abbreviations: AUC = area under curve; Se = sensitivity; Sp = specificity; %95CI = 95% confidence interval. Tg−30 = thyroglobulin 30 days before 131I; Tg0 = thyroglobulin at 131I; Tg+7 = thyroglobulin 7 days after 131I.